Texas Master Electrician Practice Test (TDLR)
Texas Department of Licensing and Regulation (TDLR) · PSI · 2026 NEC (since September 1, 2026)
NEC Knowledge: 75 questions, 150 min · Calculations: 33 questions, 170 min, each part timed and scored on its own, with worked explanations.
Or start with a free drillFor a single-phase motor protected by dual-element (time-delay) fuses, what is the maximum fuse rating as a percentage of full-load current, before rounding up?
Texas master electrician exam format
- License
- Master Electrician (TDLR)
- Board
- Texas Department of Licensing and Regulation (TDLR)
- Testing vendor
- PSI
- NEC Knowledge portion
- 75 items (5 unscored), 150 minutes
- Calculations portion
- 33 items (3 unscored), 170 minutes
- Pass mark
- 70% on each portion, scored separately
- Code
- 2026 NEC, open book (your own bound NEC)
- Fee
- $78 for both portions; retake $78
- Eligibility
- Journeyman Electrician license held at least 2 years and 12,000 hours of on-the-job training under a Texas master electrician; $45 application fee
- Official pass rate
- 19.08% and 22.21%. Fiscal year 2025: the Master Calculations portion passed 753 of 3,946 attempts (19.08%) and the Master NEC portion 771 of 3,472 (22.21%). TDLR Electrician Exam Statistics, FY2025
- TDLR reformatted the master exam into two portions, NEC Knowledge and Calculations. The content did not change; the calculation questions moved into their own portion.
- Bring your own soft-bound NEC. It may be highlighted, underlined and carry the publisher’s permanent tabs; homemade tabs, loose-leaf or spiral bindings and the NEC Handbook are not allowed, and you may not mark the book during the exam.
- Unless a question says otherwise, all conductors are copper. Do not apply code exceptions or optional calculation methods unless the question directs you to.
- The 2026 NEC moved load calculations from Article 220 to Article 120 and lowered the dwelling general lighting load to 2 VA per square foot, so 2023-edition dwelling calculations give different answers on this exam.
What the Texas TDLR master exam covers
| Subject area | Items |
|---|---|
| Definitions, theory and plans | 7 |
| Services, service equipment and separately derived systems | 11 |
| Feeders | 4 |
| Branch circuit conductors | 11 |
| Wiring methods and materials | 7 |
| Equipment and devices | 8 |
| Motors and generators | 7 |
| Control devices and disconnecting means | 3 |
| Special occupancies, equipment and conditions | 8 |
| Renewable energy (PV, EV chargers) | 4 |
| Subject area | Items |
|---|---|
| Calculations and theory | 2 |
| Services, service equipment and separately derived systems (load calculations, grounding, transformers) | 8 |
| Feeders (load calculations, overcurrent protection) | 3 |
| Branch circuit calculations and conductors | 4 |
| Wiring methods (raceways) | 2 |
| Equipment and devices (HVAC, appliances) | 2 |
| Motors and generators | 6 |
| Control devices and disconnecting means | 1 |
| Special occupancies (RVs, mobile homes, marinas) | 1 |
| Renewable energy (EV chargers) | 1 |
Our Texas TDLR practice exam
NEC Knowledge: 75 questions in 150 minutes, 70% to pass. Calculations: 33 questions in 170 minutes, 70% to pass. Our two parts use the official item counts and clocks, follow the TDLR content outline and score each part on its own. Time does not carry over between parts, as on the real exam. Questions are drawn only from items whose answer holds in the 2026 NEC, so the Calculations part covers motor, transformer, feeder, conductor, grounding and raceway calculations and leaves out dwelling load calculations, whose values changed in 2026.
Warm up with the free calculations drill or a topic guide: load calculations, services, feeders and transformers, grounding and bonding, motor calculations, special occupancies, hazardous locations.
Sit both parts under the real clocks
NEC Knowledge: 75 questions, 150 min · Calculations: 33 questions, 170 min, each part timed and scored on its own, with worked explanations.
Or start with a free drillCommon questions
Is the Texas master electrician exam open book?
Yes. You bring your own soft-bound National Electrical Code. Since September 1, 2026 the questions reference the 2026 NEC.
How many questions are on the Texas master electrician exam?
Two portions: NEC Knowledge has 75 items (5 unscored) in 150 minutes, and Calculations has 33 items (3 unscored) in 170 minutes. You need 70% on each portion.
What is the pass rate for the Texas master electrician exam?
In fiscal year 2025, 19.08% of Master Calculations attempts and 22.21% of Master NEC attempts passed (TDLR).
What does the master exam cost in Texas?
The exam fee is $78 for both portions, and the retake fee is $78 if you fail one or both portions. The license application fee is $45.
Who can take the Texas master electrician exam?
You must have held a Texas journeyman electrician license for at least two years and have 12,000 hours of on-the-job training under a Texas master electrician. Journeyman industrial experience does not count.
NEC Knowledge: 75 questions, 150 min · Calculations: 33 questions, 170 min, each part timed and scored on its own, with worked explanations.
Or start with a free drillSources
- PSI / TDLR Electrician Candidate Information Bulletin (updated 9/15/2026)
- TDLR Electrician Exam Statistics, FY2025
- TDLR: Master Electrician license requirements
Checked November 8, 2026.
Original independent practice. Not affiliated with or endorsed by NFPA, ICC, PSI, Pearson VUE or the Texas Department of Licensing and Regulation (TDLR). NEC is a registered trademark of the National Fire Protection Association. All master electrician exams